If your Wisconsin business sells tangible goods or certain taxable services, you need a sellers permit before you start collecting sales tax. The state calls it a Business Tax Registration, and the process is fairly simple.

Go to tap.revenue.wi.gov, which is the Wisconsin Department of Revenue’s Taxpayer Access Point. That’s where you submit your application online. You’ll need your federal EIN (or Social Security number if you’re a sole proprietor without an EIN), your business entity details, your NAICS business activity code, and information about what you sell. Have your formation documents nearby so you can reference dates and legal names accurately.

The state charges a one-time $20 registration fee paid during the application. Online applications are typically processed in about 2 business days. Paper applications submitted by mail can take up to 15 business days, so there’s not much reason to go that route unless you have to.

You’re required to register if your taxable sales exceed $2,000 in a year. Most businesses selling physical products in Wisconsin will reach that number quickly. If you’re just getting started and aren’t sure you’ll hit the threshold, it’s still better to register upfront. Collecting tax without a permit is a problem, and failing to collect when you should have been creates a liability you’ll owe out of your own pocket later.

Once approved, the DOR assigns you a filing frequency for your sales tax returns. This is usually monthly, quarterly, or annually depending on your projected sales volume. They determine the schedule based on what you provide during registration. Your permit number is tied to your business and needs to be available at your place of business. If you move, change your business structure, or close up shop, you need to update or cancel the registration with the DOR.

If you’d rather not handle the application yourself, Rock Steady’s sellers permit service takes care of the paperwork for you. And once you’re registered and collecting sales tax, the ongoing responsibility is filing returns on time and remitting what you’ve collected. Staying on top of that from the start is much easier than catching up later.

For Wisconsin small business owners who want help keeping their books and tax obligations organized from day one, Beaver Dam accounting services from Rock Steady Bookkeeping can make sure everything stays clean and current so you’re never scrambling at filing time.